7 in 1 Water Quality Test Paper Swimming Pool PH Test Strip Pool Test Strip Drinking Water Chemistry Test 50PCS Product details: Portable design: 50 test strips per bottle. And the bottle is compact and easy to carry. Test paper is used for analysis (PH value, total alkalinity, hardness, nitrate, nitrite, bromine, . The water quality should be tested weekly. A pack of our test strips includes 50 test strips. The test paper is used to test the water quality of drinking water, household faucets, well water, fresh water , fish tanks, swimming pools, etc. Wells and or swimming pools are easily contaminated. It is recommended to use this test strip frequently to test water quality. Accurately measure your pH to show the alkaline state to ensure the of your body and water. Instructions: 1. the reaction area of ​​the test strip in the solution to be tested for 1-2 seconds, take out the test strip, draw of the test strip along the wall of the solution container, and the excess water. 2. 1 minute, compare the color of the reaction of the test strip with the color of the color card to determine the test value of the solution to be tested. 3. The color comparison is controlled within 60s, too long or too short will affect the reading specification: Bottle material: plastic Test paper material: paper Quantity: 50 per bottle notes: 1. When out the test paper, do not operate on the reaction end of the test paper, so as not to contaminate the test paper and affect the test results. 2. out the required number of test papers, keep the remaining test papers sealed and protected from . 3. Try to keep the liquid to be tested colorless or -colored. Before testing liquids that are too dark, they can be dehydrated by adsorption with activated carbon. If the liquid to be tested is turbid, please let it stand for a period of and take out the transparent part for testing it settles. Products include: 1 bottle of PH test paper (50pcs)